Buyer Beware: The Hottest Running Laptops

HP Envy 15

The underside of the HP Envy 15 climbed all the way up to 104 degrees Fahrenheit while we streamed a flick on Netflix. However, HP's CoolSense tech was smart enough to adjust the internal fan when we moved the notebook from a desk to our lap. After playing the same video for 15 minutes in this position the bottom of the Envy 15 only reached 93 degrees.